Phonograph.



H. T. OLIVER.

PHONOGRAPH.

APPLICATION FILED SEPT. 15, 1908.

Patented Apr. 19, 1910.

2 SHEETS-8333511.

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Patented Apr. 19, 1910.

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HENRY 'I. OLIVER, OF NEWARK, NEW JERSEY, ASSIGNOB TO NEW JERSEY PATENTCOMPANY, OF WEST ORANGE, NEW JERSEY, A CORPORATION OF NEW JERSEY.

PHONOGRAPH.

T all whom it may concern:

Be it known that I, HENRY T. OLIVER, a citizen of the United States, anda resident of Newark, in the county of Essex and State of New Jersey,have invented certain new and useful Improvements in Phonographs, ofwhich the following is a description.

My invention relates to phonographs and has for its object the provisionof interchangeable means for feeding the traveling carriage upon whichthe sound box is mounted at either of two rates of speed, one of whichmay be suitable for operating upon a record having one hundred threadsper inch and the other for operating upon a record having two hundredthreads per inch. The particular means employed by me in a general wayembodies the invention disclosed in the application of Peter Weber,Serial No. 425,814, filed April 8th, 1908, in that there is a hollowrotary feed screw mounted concentrically with respect to an inner shaftand capable of being locked to said shaft so as to rotate therewith, orof being unlocked therefrom and driven thereby through interposedgearing so as to rotate at a different rate of speed.

My invention relates more particularly to improvements in the mountingof the hollow shaft, the means for locking the same to the inner shaftand for gearing the two shafts together, with a view to obtaining astructure in which the movable parts are pro tected to a great extent,are few in number, and capable of operating at the desired high rate ofspeed without undue wear or noise, such as would be objectionable in aphonograph, and in which the arrangement of the parts is compact andcapable of being applied to phonographs of ordinary construction withoutany changes in the frame or stationary parts of such machines, andwithout the provision of any supplementary or auxiliary frame forattachment to the phonograph body.

\Vith these ends in view, my invention consists in the featureshereinafter described and claimed.

In order that my invention may be more fully understood, reference ishereby made to the accompanying drawing, forming part of thisspecification, and in which- Figure 1 is a plan view, partly in section,of a phonograph constructed in accordance with my invention, the partsbeing arranged Specification of Letters Patent.

Application filed September 15, 1908.

Patented Apr. 19, 1910.

Serial No. 453,119.

for feeding the sound box carriage at a suitable speed for operatingupon records having one hundred threads per inch; Fig. 2 is a view of aportion of Fig. 1 except that the parts occupy the positions which areassumed when the carriage is to be fed at a speed suitable for operatingupon records having two hundred threads per inch; Fig. 3 is a section online 33 of Fig. 1, and Fig. 4t is a section on line H of Fig. 1.

In all the views corresponding parts are designated by the same numeralsof reference.

The phonograph shown is of a well known type and comprises a base orbody 1 upon which is rotatably mounted the main shaft 2, which carriesat one end. a driving pulley 3, and at the opposite end the mandrel 1,for supporting the sound record. This shaft may be supported in anysuitable manner. As shown, the end upon which the pulley is mounted iscupped at 6, to receive a spherical roller or ball 7 and a stud orcenter 8 is formed on the pin 9 which is secured to the body.1. Upon theshaft 2 is rotatably mounted a hollow shaft 10 formed with a feed screw11 of fine pitch, preferably one hundred threads to the inch, said screwshaft being ournaled at its ends upon the shaft 2 as shown. The outerend of the screw shaft 10 is provided with a pair of op positelydisposed pins 13 and upon the shaft 2 is slidably mounted a sleeve 14formed with a cup 12 integral therewith. One end of said sleeve isformed with a pair of notches 15 which receive the pins 13 of the shaft10, thereby causing said members to rotate together. On the other end ofsaid sleeve is fixed a spur gear 16 and one or more pins 17 projectingfrom its face and adapted to engage holes or sockets 18 formed in theweb of the pulley 3 which is fixed to the shaft 2 by means of a setscrew 5. Then in this position, as illustrated in Fig. 1, the sleeve 14:and shaft 2 are locked together and the screw shaft 10 is thereforelocked to the shaft 2 and rotates at the same speed, and by reason ofthe engagement of the feed nut 21 with the screw 11, feeds the sound boxcarriage at a rate suitable for operating upon records having onehundred threads per inch.

There is a spur gear 22 which is fixed upon a shouldered portion of thepin 9, and there is a bearing 23 carried by the pulley 3, in which isjournaled a shaft 24;, upon the ends of which are secured the spur gears25 and 26. The gear 25 meshes with the gear 22 and the gear 26 is soplaced that when the parts occupy the position shown in Fig. 1, it isout of engagement with the gear 16, and the shaft 24 rotates idly. henthe parts are in the position shown in Fig. 2, the gears 16 and 26 arein driving engagement and the pin 17 entirely withdrawn from the socket18, so that the shaft 10 is unlocked from the shaft 2, and is drivenfrom the pulley 3 by reason of the engagement of the gear 25 with thefixed gear 22 and the gear 26 with the gear 16, which gears are soproportioned as to drive the shaft 10 at half the speed of the shaft 2and thereby feed the carriage 20 at a rate suitable for operating uponrecords having two hundred threads per inch. In order, therefore, torender the instrument capable of operating upon records having onehundred threads per inch, it is necessary only to move the sleeve 14Linto such position as to lock the same to the pulley 3 by the engagementof the pin 17 with the socket 18, as shown in Fig. 1, and in order toadapt the instrument to operate upon records having two hundred threadsper inch, it is necessary only to move the sleeve 1e from the positionof Fig. 1 into that of Fig. 2.

It will be observed that the cup 12 which is formed upon the sleeve 14fits closely within the circular opening 27 in the face of the pulley 3and incloses and protects the gears 26 and 16, and that the oppositeface of the said pulley is provided with a recess 28 in which aresituated the cars 22 and 25. Thus the entire interchangea le gear systemoccupies about the same space as the drive pulley of the main shaft ofthe ordinary phonograph, and the driving parts or gears are largelyprotected from dust and dirt, while at the same time the practicaloperation of my invention has shown me that there is very little noiseproduced by the driving mechanism when operating in either of itspositions, so that it does not detract at all from the operation of theinstrument. Furthermore, my improvement-s may be readily applied to anordinary phonograph, as it is necessary only to remove from thephonograph the shaft which carries the mandrel, feed screw and drivingpulley, and substitute therefor the concentric shafts 2 and 10, pulley 3and parts associated therewith.

In order to prevent longitudinal movement of the shaft 10 a groove 29 isformed in the end thereof, and there is a collar 30 secured by a setscrew 31 to the shaft 2. A bent plate 32 is secured to said collar by ascrew 33, in such a way that its end engages said groove 29, as shown inFig. 1.

In order to lock the sleeve 14 in either of its operative positions, apair of grooves 34 are formed in thc shaft 2, and there is a small pin35 (see Fig. at) mounted in an opening in the sleeve 14, in suchposition as to enter one of the grooves 3% when the sleeve is in theposition of Fig. 1, and the other of said grooves when said sleeve is inthe position of Fig. 2. The inner end of the pin is rounded, and thereis a flat spring 36 secured at one end to the sleeve 1% by a screw 37,the free end of said spring pressing upon the head of the pin 35,whereby said pin operates as a detent releasable by the longitudinalmovement of the sleeve 14, which will ordinarily be operated by thehand, although special means may be provided for this purpose, ifdesired.

Having now described my invention, what I claim is:

1. In a phonograph, the combination of the main shaft, a rotary hollowfeed screw shaft surrounding said main shaft, a gear concentric androtatable with said hollow shaft, a fixed gear concentric therewith, anda planet wheel for driving said rotary gear from said fixed ear,substantially as set forth.

2. In a phonograph, the combination with the rotating hollow feed screwshaft, of a rotary shaft within said screw shaft, means for locking saidshafts together so as to rotate at the same speed, and meansinterchangeable therewith for gearing said shafts together so as torotate at different speeds and comprising a fixed and a rotary gearconcentric with said shafts, and a planet wheel, substantially as setforth.

3. In a phonograph, the combination of the main shaft, a rotary hollowfeed screw shaft surrounding said main shaft, a drive pulley fixed tosaid main shaft and planet ary gearing applied to said pulley andadapted to drive the hollow shaft in the same direct-ion as the mainshaft but at a different speed, substantially as set forth.

at. In a phonograph, the combination of the main shaft, a rotary hollowfeed screw shaft surrounding said main shaft, a drive pulley fixed tosaid main shaft, and plan etary gearing adapted to drive the hollowshaft in the same direction as the main shaft but at a different speed,said pulley being recessed to receive said gearing, substantially as setforth.

5. In a phonograph, the combination of the main shaft and hollow feedscrew shaft concentric therewith, a longitudinally movable sleeve 14:rotatable with the hollow shaft 10, said sleeve being formed with a cup,and a planet wheel adapted to connect said shafts in driving relationand so situated as to be protected by said cup, substantially as setforth.

6. In a phonograph, the combination of a hollow feed screw shaft andmain shaft concentric therewith, a drive pulley secured to the mainshaft and formed with a recess, a sleeve rotatable with said hollowshaft and movable longitudinally thereof, said sleeve being so situatedas to close said recess formed in said pulley, substantially as setforth.

7. In a phonograph, the combination of the hollow feed screw shaft andmain shaft concentric therewith, a drive pulley secured to the mainshaft and formed with a recess, a fixed gear concentric with said pulleyand situated within said recess, and a planet wheel carried by saidpulley in driving relation to said fixed gear, substantially as setforth.

8. In a phonograph, the combination of the hollow feed screw shaft andmain shaft HENRY T. OLIVER.

l/Vitnesses:

DELOS HOLDEN, H. H. DYKE.

